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Proceedings Paper

Analytical modeling of graphene plasmons (Conference Presentation)
Author(s): Renwen Yu; Joel Cox; José Ramón Martínez Saavedra; Javier García de Abajo

Paper Abstract

The two-dimensionality of graphene and other layered materials can be exploited to simplify the theoretical description of their plasmonic and polaritonic modes. We present an analytical theory that allows us to simulate these excitations in laterally patterned structures in terms of plasmon wave functions (PWFs). Closed-form expressions are offered for their associated extinction spectra, involving only two real parameters for each plasmon mode and graphene morphology, which we calculate and tabulate once and for all. Classical and quantum-mechanical formulations of this PWF formalism are introduced, in excellent mutual agreement for armchaired islands with >10 nm characteristic size. Examples of application are presented to predict both plasmon-induced transparency in interacting nanoribbons and excellent sensing capabilities through the response to the dielectric environment. We argue that the PWF formalism has general applicability and allows us to analytically describe a wide range of 2D polaritonic behavior, thus providing a convenient tool for the design of actual devices.

Paper Details

Date Published: 17 September 2018
Proc. SPIE 10721, Active Photonic Platforms X, 107210M (17 September 2018); doi: 10.1117/12.2320131
Show Author Affiliations
Renwen Yu, ICFO - Institut de Ciències Fotòniques (Spain)
Joel Cox, ICFO - Institut de Ciències Fotòniques (Spain)
José Ramón Martínez Saavedra, ICFO - Institut de Ciències Fotòniques (Spain)
Javier García de Abajo, ICFO - Institut de Ciències Fotòniques (Spain)

Published in SPIE Proceedings Vol. 10721:
Active Photonic Platforms X
Ganapathi S. Subramania; Stavroula Foteinopoulou, Editor(s)

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